Lamp



FIG. 1 is a perspective view of a lamp.

FIG. 2 is front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right side view thereof, the left side being a mirror image;

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof.

The broken lines shown in the drawings illustrate portions of the lamp that form no part of the claimed design. 

CLAIM The ornamental design for lamp, as shown and described. 